Impact wrench



FIG. 1 is a top plan view of an impact wrench showing our new design;

FIG. 2 is a left side elevational view;

FIG. 3 is a right side elevational view;

FIG. 4 is a front elevational view;

FIG. 5 is a rear elevational view; and,

FIG. 6 is a bottom plan view thereof. 

The ornamental design for the impact wrench, as shown and described. 